Postoperative Maxillary Cyst Research Articles

Intraoral Approach for Dental Implant Placement in Pneumatized Maxillary Sinuses with Postoperative Maxillary Cysts: A Report of Two Cases.

A postoperative maxillary cyst (POMC) is a delayed complication of the original Caldwell Luc operation, which was once widely performed to treat chronic rhinosinusitis. Two patients who had previously undergone Caldwell Luc operations desired dental implant treatment. In both cases, preoperative conebeam computed tomography (CBCT) revealed a POMC occupying the entire maxillary sinus on the side where the implants were to be placed. The residual bone height was 3-4 mm. Furthermore, the sinuses were divided into compartments by septum-like structures. An intraoral approach was applied for POMC enucleation and implant placement. The implants were placed with sinus floor penetration due to the small residual bone height. No bone substitute material was grafted in the sinus. Post-operative healing was uneventful. All implants were successfully osseointegrated and performed well (4 and 5 years for each patient). No sino-nasal complications were reported. Follow-up CBCTs showed that the exposed implant parts were covered by newly formed bone. The intraoral approach is a feasible option for implant placement in a pneumatized maxillary sinus with POMC.

Clinical and Radiological Characteristics in Patients with Postoperative Maxillary Cyst: A Retrospective Study

Clinical and Radiological Characteristics in Patients with Postoperative Maxillary Cyst: A Retrospective Study

Surgical ciliated cyst of the mandible after orthognathic surgery: a case report with review of the literature

BackgroundSurgical ciliated cysts, also known as postoperative maxillary cysts or implantation cysts, occur mainly in the posterior maxilla after radical maxillary sinus surgery; they rarely develop in the mandible. They are thought to occur when the sinonasal epithelium is infiltrated by a surgical instrument during surgery or as a result of transplantation of bone or cartilage with respiratory epithelium attached.Case presentationWe report a case in which a surgical ciliated cyst developed in the anterior part of the mandible, presumably as a result of bimaxillary orthognathic surgery and genioplasty performed 24 years earlier. We then review the few similar cases reported in the literature.ConclusionSurgical ciliated cysts in the mandible are extremely rare, but they could occur after simultaneous surgery on the maxilla and mandible, even decades later. To prevent surgical ciliated cysts in the mandible, we recommend that the surgical instruments, especially the saw blade used during bimaxillary surgery, be new or cleaned and that previously placed plates and screws be removed at an appropriate time.

Novel Application of an Ultrasonic Bone Aspirator for Endoscopic Modified Medial Maxillectomy.

BackgroundEndoscopic modified medial maxillectomy (EMMM) is a surgical technique developed to approach maxillary sinus lesions, such as papilloma and postoperative maxillary cyst, while preserving the postoperative nasal morphology and nasal function. In this technique, a diamond burr is used to remove the bone, which may damage adjacent soft tissue. We developed EMMM using an ultrasonic bone aspirator (UBA) instead of a conventional diamond burr. The purpose of this study was to clarify the effectiveness of the UBA in EMMM in comparison to the conventional diamond burr technique in terms of operative time, intraoperative complications, postoperative symptoms, and recurrence.MethodsThe medical records of all patients who underwent EMMM at Toyama University Hospital between June 2014 and December 2021 were reviewed. Patients who met the inclusion criteria were separated into Group 1, in which the UBA was used for EMMM, and Group 2, in which a drill with a diamond burr was used. Data on patient demographics, operation time, frequency of intraoperative complications and postoperative symptoms, and recurrence were statistically compared between the two groups.ResultsThere were no significant differences between the two groups in the patient demographic data, operative time, postoperative symptoms, or frequency of recurrence. The frequency of intraoperative damage to adjacent soft tissues was significantly lower in patients who underwent EMMM with the UBA in comparison to those who underwent EMMM with a conventional diamond burr.ConclusionThe application of the UBA to EMMM can improve surgical safety and facilitate surgical procedures.

Late Developed Unusual Nasal Involvement of Postoperative Maxillary Cyst Following Maxillary Sinus Augmentation: A Case Report

Postoperative maxillary cyst (POMC) is a benign expansive cystic lesion of the maxilla generally related to invasive maxillary surgeries or trauma. POMC can also develop after maxillary sinus augmentation (MSA), but many dentists are not well-aware of such complication of MSA. A 56-year-old male patient had undergone bilateral MSA. After 18 years, the patient reported painless swelling on the left palate. On the panoramic radiographs, no specific findings were found, but a large unilocular lesion was detected at the medial side of the previous augmentation of the left maxillary sinus on cone-beam computed tomographic examination. The lesion expanded medially and downward to destruct the medial wall of the maxillary sinus and palatal bone. Medial expansion of the lesion also reached the nasal septum and inferior meatus. Due to the extent and the location, the lesion was hard to manage using an intraoral surgical approach. The patient was then referred to an otolaryngologist in a university hospital. Endoscopic marsupialization was performed under general anesthesia. Previous augmentation and dental implants could be maintained during the marsupialization. The removed tissue sample revealed respiratory epithelium with inflammatory cell infiltration, confirming that the lesion was a postoperative maxillary cyst (POMC). There has been no recurrence of POMC to date. POMC is a rare postoperative complication of maxillary sinus augmentation, but clinicians should be aware of the possibility of POMC and the necessity of regular radiological monitoring.

Perspective on the clone library method for infectious diseases.

Recently, culture-independent molecular methods, such as DNA sequencing techniques targeting the 16S-ribosomal RNA (rRNA) gene and/or other housekeeping genes with Sanger method-based technologies, next generation sequencing (NGS), and metagenomic analysis, have been developed for detecting microorganisms in the human body; these can provide information on microbiomes of samples from individuals with or without infectious diseases. Determining the bacterial species is crucial in identifying causative bacteria of upper and lower respiratory tract infections, especially for Streptococcus species, but NGS analysis is often not precise enough to identify bacteria at the species level. This review briefly introduces previous observations of the microbiome of samples from various respiratory and other infections assessed using the clone library method with Sanger sequencing of the 16S-rRNA gene. On analysis of 16S-rRNA gene-sequence data of bronchoalveolar lavage fluid obtained from pneumonia lesions in patients with bacterial pneumonia and lung abscess, anaerobes are often detected in non-elderly patients with pneumonia, and the detection rate of Staphylococcus aureus in patients with hospital-acquired pneumonia is lower than that previously reported. Analysis of pleural effusion samples from patients with pleurisy indicated a more important role of anaerobes than previous believed. The other topics reviewed include microbiomes of nontuberculous mycobacteriosis and lower respiratory tract infections in children with permanent tracheostomy due to neuromuscular disorders, in nasal discharge, in bacterial vaginosis, in the intracystic fluid of postoperative maxillary cyst, and in bacterial conjunctivitis; urine microbiota in urethritis; fecal microbiota; and newly detected infectious organisms in the human respiratory tract.

The importance of early detection for postoperative maxillary cyst before dental implantation: A case report.

Introduction and importanceIt is difficult that doctors other than otorhinolaryngologist/radiologist find early postoperative maxillary cyst (POMC) because it tends to expand gradually with no symptoms over a period of years.Case presentationA 60-year-old Japanese male who had previously undergone a bilateral Caldwell-Luc operation for the treatment of chronic sinusitis, experienced maxillary sinus floor elevation and implant placement. Eleven years after the implant placement, we discovered that the left POMC existed close to dental implants. Fortunately, dental implants still displayed proper osseointegration. Thus, the patient has been successfully treated for POMC, which had not been proper diagnosed before the implantation, by a marsupialization using nasal endoscopy and successfully preserved dental implant.Clinical discussionBecause the expanding POMC might result in dental implant failure after several years, we think that marsupialization is useful as a risk management for possible failure of dental implant close to POMC when it had not been found before maxillary sinus floor elevation and insertion of dental implant.ConclusionDoctors should recognize that patients will have the risk of the dental implant failure after several years due to the expanding cyst when early POMC had not been diagnosed and treated properly before the implantation.

A Covered Lateral and Posterior Wall Flap of the Maxillary Sinus Prevents Reocclusion of the Postoperative Maxillary Cyst.

The online version contains supplementary material available at 10.1007/s12070-021-02658-x.

Surgical ciliated cyst of the left maxilla - A case report of unusual pathogenesis

Introduction:Surgical ciliated cyst (SCC) is a type of true epithelial lined antral cysts, which mostly occurs in maxilla from the sinonasal mucosa and gland, comprising 20% of all oral cysts in Japan. It is also called as postoperative maxillary cyst or postoperative paranasal cyst. The etiology is believed to be post trauma or surgery in the region of maxillary antrum.Patient concerns:Patient's concern is less evident in this cystic pathology, because this cyst even though an aggressive cyst, presents with fewer symptoms that can be uncomfortable to the patient or push them to seek medical attention. Often, this becomes an incidental finding during routine postoperative follow-up.Rationale:The rationale behind this report is to emphasize even a traumatic extraction of tooth can damage the floor of the sinus and lead to the cyst formation.Report:We report a case of SCC in a 76-year-old female of the left maxillary sinus possibly after a traumatic extraction of the tooth, for which enucleation of the cyst was done as a primary modality of treatment.Diagnosis:Diagnosis was made after a computed tomography (CT) scan and incisional biopsy. Diagnosis of such rare cases poses a great challenge due to its paucity in etiology, and it often requires a CT scan that becomes an essential gold standard investigation.Outcomes:Patient is currently under one year follow up and without any signs of recurrence.Lessons:It should be acknowledged that tampering trauma or with sinus mucosa can trigger the formation of a SCC of the maxilla, and it should always be considered as a possible sequel after any procedure of such potential in the maxilla.

Bone Augmentation by the Dredging Method for Dental Implant Placement in Alveolar Bone Resorbed due to a Postoperative Maxillary Cyst

Bone Augmentation by the Dredging Method for Dental Implant Placement in Alveolar Bone Resorbed due to a Postoperative Maxillary Cyst

Streptococcus chosunense sp. nov., Isolated from Human Postoperative Maxillary Cyst.

A novel facultative anaerobic, non-spore forming, non-motile, and Gram-stain-positive coccus, designated strain ChDC B353T, was isolated from human postoperative maxillary cyst. The 16S ribosomal RNA gene (16S rDNA) sequence of the strain was most closely related to those of Streptococcus pseudopneumoniae ATCC BAA-960T (99.4%), Streptococcus mitis NCTC 12261T (99.3%), and Streptococcus pneumoniae NCTC 7465T (99.2%). The major fatty acids of the strain were C16:0 (43.2%) and C18:1 ω6c/C18:1 ω7c (20.2%). The genome of strain ChDC B353T was composed of 1,902,053 bps. The DNA G+C content of the strain was 40.2mol%. Average nucleotide identity (ANI) values between strain ChDC B353T and S. pseudopneumoniae ATCC BAA-960T, S. mitis NCTC 12261T, and S. pneumoniae NCTC 7465T were 91.9%, 93.5%, and 91.3%, respectively. Genome-to-genome distance (GGD) values between strain ChDC B353T and S. pseudopneumoniae ATCC BAA-960T, S. mitis NCTC 12261T, or S. pneumoniae NCTC 7465T were 46.6% (44.0-49.2%), 53.2% (50.5-55.9%), and 46.0% (43.5-48.7%), respectively. The threshold values of ANI and GGD for species discrimination are 95-96% and 70%, respectively. These results reveal that strain ChDC B353T (= KCOM 1699T = JCM 33453T) is a novel species belonging to genus Streptococcus, for which a name of Streptococcus chosunense sp. nov. is proposed.

Surgery of Postoperative Maxillary Cyst Combined with Fenestration of the Nasolacrimal Duct

Surgery of Postoperative Maxillary Cyst Combined with Fenestration of the Nasolacrimal Duct

Bilateral postoperative maxillary cysts presenting as a diagnostic challenge

Postoperative maxillary cysts (POMCs) are considered as a delayed complication, which occurs after several years of occurring many years after maxillary sinus surgery. The variable symptoms related to POMCs include swelling and pain in the buccal region, discomfort in the maxilla or maxillary teeth, and exophthalmos. Symptoms related to the teeth may be confused with those of an odontogenic disease. Herein, We report about the delayed diagnosis of bilateral POMCs in the maxillary region 30 years after Caldwell-Luc surgery for maxillary sinusitis.

Postoperative Maxillary Cyst Developing After Sinus Augmentation for Dental Implants: A Rare Case Report.

Sinus augmentation is a routine procedure performed in patients presenting with severe atrophy of the posterior maxillary alveolar ridge who seek dental implant surgery. Although this strategy is successful in large part, complications such as maxillary sinusitis, antral bleeding, resorption of graft material, infection, failure of implant installation, and oroantral fistula formation are documented on occasion. However, reports of postoperative maxillary cyst (POMC) arising after sinus augmentation are rare. Described herein is a rare and large case of POMC formation after sinus augmentation. A brief review of the pertinent literature is included.

Infraorbital Nerve Located Medially to Postoperative Maxillary Cysts: A Risk of Endonasal Surgery

Background/Aims: This study aimed to examine variations in the location of the infraorbital nerve relative to postoperative maxillary cysts to assess the potential risk of nerve injury during endonasal marsupialization. Methods: Coronal computed tomography images of 130 patients (162 sides) with postoperative maxillary cysts who visited our clinic between 2003 and 2014 were reviewed from the viewpoint of the anatomical relationship between the infraorbital nerves and cysts. Results: The proportions of the six locations were as follows: upside 45.1% (n = 73), separate 13.0% (n = 21), medial 5.6% (n = 9), lateral 14.2% (n = 23), in-between 7.4% (n = 12), and unevaluable 14.8% (n = 24). The proportion of the cases with a potential risk of infraorbital nerve damage during endoscopic marsupialization, including medial, in-between, and unevaluable locations, was 27.8%. Retrospective chart review revealed that 2 patients with a postoperative maxillary cyst that were unevaluable complained of persistent postoperative hypoesthesia of the cheek. Conclusion: The anatomical relationship between the infraorbital nerve and postoperative maxillary cysts varied among patients, with approximately one-fourth of the patients being at risk of infraorbital nerve injury even during endoscopic procedures.

A Case of Secondary Trigeminal Neuralgia Caused by Infected Postoperative Maxillary Cyst

A Case of Secondary Trigeminal Neuralgia Caused by Infected Postoperative Maxillary Cyst

Post-operative maxillary cyst related to LeFort I osteotomy: Case report

Post-operative maxillary cysts are locally aggressive lesions that typically develop as delayed complications many years after a Caldwell-Luc operation. This report describes a case of post-operative maxillary cysts following a LeFort I osteotomy performed approximately 7 years ago. The patient complained of stinging pain on her left cheek. Radiographic examination revealed a radiolucency lesion on the left maxillary sinus with a well-defined margin and bone destruction. The cysts were enucleated with the removal of metal plates and screws for pain relief. A histopathological examination confirmed the diagnosis of post-operative maxillary cysts. The patient has remained asymptomatic thus far, and there was no evidence of local recurrence at the 3-year postoperative follow-up.

Post-operative maxillary cyst related to LeFort I osteotomy: Case report

Post-operative maxillary cyst related to LeFort I osteotomy: Case report

SURGICAL CILIATED CYST: A CASE REPORT

Surgical ciliated cyst is often described as a postoperative maxillary cyst or paranasal cyst. Characterized by an aggressive injury, it is commonly described in patients who underwent radical surgery on the maxillary sinus region, such as orthognathic or Caldwell-Luc procedures. Herein we report a case of a 47-year-old patient complaining of spontaneous pain and swelling in the anterior maxilla, presenting a history of a 9-month-old surgery in the posterior maxilla intended to remove an odontogenic cystic lesion. CT scan showed a low-density lesion in the left maxillary sinus region. Biopsy and histopathologic examination established the diagnosis of surgical ciliated cyst. The patient is under a 2-year non-symptomatic follow-up.

Transnasal endoscopic removal of bilateral postoperative maxillary cysts after aesthetic orthognathic ssurgery: Differences from that of Caldwell-Luc operations

Postoperative maxillary cysts (PMCs) after orthognathic surgery are a rare disease condition. In this study, we reported first case of bilateral PMCs after cosmetic orthognathic surgery which was treated via the intranasal endoscopic approach. In addition, we compared the characteristics of PMCs after aesthetic orthognathic surgery with those of PMCs after Caldwell-Luc operation. We expect that this case will be helpful to surgeons who encounter similar cases.